HTML5 audio function, html5 audio

HTML5 audio function, html5 audio
HTML5 audio Functions

1. Web audio

Until now, there is still no standard for playing audio on the webpage.

Today, most audios are played using plug-ins (such as Flash. However, not all browsers have the same plug-ins.

HTML5 specifies a standard method to include audio through the audio element, that is, HTML5 provides the standard for playing audio.

The audio element can play audio files or audio streams.

2. Audio Format

Currently, the audio element supports three audio formats:

IE 9	Firefox 3.5	Opera 10.5	Google Chrome 3.0	Safari 3.0
Ogg Vorbis		√	√	√
MP3	√			√	√
Wav		√	√		√

3. How to work

To play audio in HTML5, You need:

<audio src="song.ogg" controls="controls"></audio>

The control attribute allows you to add playback, pause, and volume controls.

The content inserted between <audio> and </audio> is displayed by browsers that do not support the audio element:

<audio src="song.ogg" controls="controls">Your browser does not support the audio tag.</audio>

The above example uses an Ogg file, which is applicable to Firefox, Opera, and Chrome browsers.

Make sure that the audio file is MP3 or Wav in Safari.

The audio element allows multiple source elements. The source element can be used to link different audio files. The browser uses the first recognizable format:

<audio controls="controls">  <source src="song.ogg" type="audio/ogg">  <source src="song.mp3" type="audio/mpeg">Your browser does not support the audio tag.</audio>

Note: Internet Explorer 8 does not support audio elements. In IE 9, support for audio elements is provided.

4. attributes of the <audio> tag

Attribute	Value	Description
Autoplay	Autoplay	If this attribute appears, the audio will be played immediately after it is ready.
Controls	Controls	If this attribute is displayed, the control, such as the play button, is displayed to the user.
Loop	Loop	If this attribute is displayed, the video is played again whenever the audio ends.
Preload	Preload	If this attribute is displayed, the audio is loaded when the page is loaded and ready for playing. If "autoplay" is used, this attribute is ignored.
Src	Url	The URL of the audio to be played.

5. instance demonstration

<! DOCTYPE html>